CN110514620A - Spectral method of detection and system based on portable near infrared spectrometer - Google Patents
Spectral method of detection and system based on portable near infrared spectrometer Download PDFInfo
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Abstract
The present invention relates to technical field of spectral detection, present invention seek to address that the problem that existing spectral detection real-time is lower, it is proposed a kind of spectral method of detection based on portable near infrared spectrometer, the following steps are included: obtaining the corresponding at least two spectral informations figure of test sample different location respectively by portable near infrared spectrometer, and spectral information figure is sent to mobile terminal in real time；After mobile terminal receives spectral information figure, mean value calculation is carried out to the corresponding spectral information of all spectral information figures and obtains spectroscopic data, and spectroscopic data is sent to background server；Background server receives spectroscopic data, and spectroscopic data is handled and analyzed, and obtains analysis result and sends it to mobile terminal.Operator can check analysis as a result, sending laboratory back to without will test sample or preserve the near infrared spectrometer of spectral information figure by mobile terminal, improve the real-time to detection sample spectrum detection.
Description
Technical field
The present invention relates to technical field of spectral detection, a kind of spectral method of detection and system are related in particular to.
Background technique
Near-infrared spectrum technique is to develop very quick analytical technology in the world at present, it has lossless, quick etc. excellent
Point, it is extremely rapid in chemical industry, agricultural, environment, medicine and other fields development using very extensive.In recent years, more and more sections
Scholar furthers investigate near infrared spectrometer, and research range is also increasingly wider.They are by chemo metric software, spectrometer
Combine with application model, greatly expands the application field of near infrared spectrometer.Near infrared spectrometer is at present in process
Extremely important effect is played in analytical technology.
Existing near infrared spectrometer is carrying out spectral detection to detection sample, usually there is following two mode: first is that
It is equipped with spectral data analysis module inside near infrared spectrometer, testing result can be provided in real time after acquiring spectral signal,
But the volume of this near infrared spectrometer is larger, operator is not readily portable, and generally requiring will test sample and send to experiment
Room carries out spectral detection；Second is that near infrared spectrometer is only acquired spectral signal, generates corresponding spectral information figure and go forward side by side
Row saves, and the near infrared spectrometer for preserving spectral information figure is taken back laboratory and carries out data analysis, this side by operator
Although formula can reduce the volume of near infrared spectrometer in order to operator's carrying, dividing in real time for spectroscopic data cannot achieve
Analysis.
Summary of the invention
Present invention seek to address that the problem that existing spectral detection real-time is lower, proposes a kind of based on Portable near infrared
The spectral method of detection and system of spectrometer.
The technical proposal adopted by the invention to solve the above technical problems is that: the spectrum based on portable near infrared spectrometer
Detection method, comprising the following steps:
Step 1. obtains corresponding at least two light of test sample different location by portable near infrared spectrometer respectively
Spectrum information figure, and the spectral information figure is sent to mobile terminal in real time；
After step 2. mobile terminal receives the spectral information figure, the corresponding spectral information of all spectral information figures is carried out
Mean value calculation obtains spectroscopic data, and the spectroscopic data is sent to background server；
Step 3. background server receives the spectroscopic data, and the spectroscopic data is handled and analyzed, and obtains
Analysis result simultaneously sends it to mobile terminal.
It further, is the acquisition for realizing at least two spectral information figures, it is described to obtain test sample different location respectively
Corresponding at least two spectral informations figure includes:
Portable near infrared spectrometer launches outward the position of light according to preset times adjustment, obtains test sample respectively
The corresponding at least two spectral informations figure of different location；
It includes: to receive portable near infrared spectrometer according to preset times that the mobile terminal, which receives the spectral information figure,
Adjustment launches outward the corresponding all spectral information figures in position of light.
It further, is the acquisition for realizing at least two spectral information figures, it is described to obtain test sample different location respectively
Corresponding at least two spectral informations figure includes:
Portable near infrared spectrometer adjusts the position for launching outward light, and it is corresponding to obtain test sample different location respectively
At least two spectral information figures；
It includes: that mobile terminal receives the corresponding spectral information of preset times that the mobile terminal, which receives the spectral information figure,
Figure.
It further, is the acquisition for realizing spectral information figure, the test sample different location of acquisition respectively is corresponding extremely
Two spectral information figures include: less
The tungsten halogen lamp of portable near infrared spectrometer launches outward light, and light is after test sample surface generates diffusing reflection
The light receiver device of portable near infrared spectrometer is returned to, reflection light changes optical path direction through light receiver device, then leads to
Cross the spectrogram drafting module that portable near infrared spectrometer is incident to after Fa-Po cavity is filtered, spectrogram drafting module according to
The corresponding spectral information of light draws corresponding spectral information figure, adjusts the position of portable near infrared spectrometer, repeats above-mentioned
Step obtains the corresponding at least two spectral informations figure of test sample different location respectively.
Further, the reasonability of spectral information figure is judged for personnel easy to repair, the mobile terminal is described in the reception
After spectral information figure further include: carry out real-time display to the spectral information figure.
Further, change to eliminate size, granular size, surface scattering and light path degree in detection sample to spectroscopic data
Influence, it is described to spectroscopic data carry out processing include: by standard normal transformation processing is corrected to the spectroscopic data.
Further, be improve spectral data analysis accuracy, it is described to spectroscopic data carry out analysis include: according to core
Partial Least Squares creates spectral data analysis model, and the spectroscopic data is input in the spectral data analysis model,
Obtain spectral data analysis result.
The present invention also proposes a kind of spectral detection system based on portable near infrared spectrometer, comprising:
Portable near infrared spectrometer, for obtaining corresponding at least two spectral information of test sample different location respectively
Figure, and the spectral information figure is sent to mobile terminal in real time；
Mobile terminal carries out the corresponding spectral information of all spectral information figures after receiving the spectral information figure
Mean value calculation obtains spectroscopic data, and the spectroscopic data is sent to background server；
Background server is handled and is analyzed for receiving the spectroscopic data, and to the spectroscopic data, divided
Analysis result simultaneously sends it to mobile terminal.
Further, the portable near infrared spectrometer includes:
Tungsten halogen lamp, for launching outward light to detecting sample；
Light receiver device, for receiving reflection light of the transmitting light after test sample surface generates diffusing reflection, and
The optical path direction for changing reflection light, makes reflection light be incident to spectrogram drafting module；
Fa-Po cavity, for receive it is described change direction after reflection light, be input to spectrogram after being filtered to it and draw
Molding block；
Spectrogram drafting module is drawn for receiving the filtered reflection light, and according to its corresponding spectral information
Make corresponding spectral information figure.
Further, the background server is also used to: being corrected by standard normal transformation to the spectroscopic data
Processing；And
Spectral data analysis model is created according to kernel partial least squares, the spectroscopic data is input to the spectrum number
According in analysis model, obtaining spectral data analysis result.
The beneficial effects of the present invention are: spectral method of detection of the present invention based on portable near infrared spectrometer and
System is acquired portable near infrared spectrometer by mobile terminal on the basis of original portable near infrared spectrometer
Spectroscopic data be sent to background server, background server carries out that analysis result is sent to mobile terminal after data analysis,
Operator can check analysis as a result, without will test sample or preserve the close red of spectral information figure by mobile terminal
External spectrum instrument sends laboratory back to, improves the real-time to detection sample spectrum detection, in addition, to the different location of detection sample
Spectral information multiple spectral information figures for carrying out repeated detection, and repeated detection being obtained carry out the light that mean value calculation obtains
Modal data is analyzed, and the accuracy of spectral detection is improved.
Detailed description of the invention
Fig. 1 is the process signal of the spectral method of detection based on portable near infrared spectrometer described in the embodiment of the present invention
Figure；
Fig. 2 is the structural representation of the spectral detection system based on portable near infrared spectrometer described in the embodiment of the present invention
Figure.
Specific embodiment
Embodiments of the present invention are described in detail below in conjunction with attached drawing.
Spectral method of detection of the present invention based on portable near infrared spectrometer, comprising the following steps: step 1.
Obtain the corresponding at least two spectral informations figure of test sample different location respectively by portable near infrared spectrometer, and by institute
It states spectral information figure and is sent to mobile terminal in real time；After step 2. mobile terminal receives the spectral information figure, to all spectrum
The corresponding spectral information of hum pattern carries out mean value calculation and obtains spectroscopic data, and the spectroscopic data is sent to background service
Device；Step 3. background server receives the spectroscopic data, and the spectroscopic data is handled and analyzed, and obtains analysis knot
Fruit simultaneously sends it to mobile terminal.
Specifically, portable near infrared spectrometer and mobile terminal are established and are communicated to connect, in portable near infrared spectrometer
It is equipped with control module, the detection number of portable near infrared spectrometer can be set in operator, and control module control is portable
Near infrared spectrometer adjusts light and emits position, obtains the corresponding multiple spectral information figures of detection sample different location, and by its
It is sent to mobile terminal in real time by communication module, mobile terminal and background server foundation have wireless communication connection, and install
Have corresponding APP, mobile terminal after receiving multiple spectral information figures, to the corresponding spectral information of all spectral information figures into
The spectroscopic data of detection sample is obtained after row mean value calculation, then the spectroscopic data is passed through into the wireless communication with background server
Connection is sent to background server and is handled it and analyzed after background server receives the spectroscopic data of detection sample
The analysis of the spectroscopic data is obtained afterwards as a result, finally feeding back to mobile terminal, operator should according to feedback result, that is, knowable
The spectral detection for detecting sample analyzes result.
Embodiment
Based on the spectral method of detection of portable near infrared spectrometer described in the embodiment of the present invention, as shown in Figure 1, including
Following steps:
Step S1. obtains corresponding at least two light of test sample different location by portable near infrared spectrometer respectively
Spectrum information figure, and the spectral information figure is sent to mobile terminal in real time；
It is connect specifically, portable near infrared spectrometer can establish cable data with mobile terminal, such as passes through data
Line mode connects portable near infrared spectrometer and mobile terminal, can also be in portable near infrared spectrometer in order to more convenient
Be respectively set wireless communication module, such as bluetooth module in mobile terminal, and then realize the transmission of spectral information figure, utilize " blue
Tooth " technology can effectively simplify the communication between mobile terminal and portable infrared spectrograph, also can successfully simplify and set
The standby communication between internet Internet, so that data transmission becomes more efficient rapidly.Compared to wire transmission, bluetooth
The transmission of good protection spectral information figure is capable of in the safety and strong antijamming capability of communication.
Carry out detection sample spectral information figure obtain before, maintenance personal need to portable near infrared spectrometer into
Row calibration, e.g., after mobile terminal and portable near infrared spectrometer management communication connection, operator can be by movement eventually
The APP control portable near infrared spectrometer itself at end is calibrated, and carries out the acquisition of spectral signal after the completion of self-aligning again.
More portable near infrared spectrometers of same model can also be passed through after portable near infrared spectrometer completes self-aligning
Same standard film is detected, standard film can be polystyrene, and polystyrene standard piece is not only at low cost, while measure mistake
Difference is small, and precision is high, fully meets the feature of production standard film, if it is detected that come result be it is identical, illustrate each portable close
Error is not present between infrared spectrometer, if testing result has larger difference, needs to carry out portable near infrared spectrometer
Re-optimization processing.
Wherein, the concrete mode of portable infrared spectrograph acquisition spectral information figure is as follows: portable near infrared spectrometer
Tungsten halogen lamp launch outward light, light returns to the light of portable near infrared spectrometer after test sample surface generates diffusing reflection
Line reception device, light receiver device change optical path direction using two panels non-spherical lens, and reflection light is through light receiver device
Change optical path direction, then be incident to the spectrogram drafting module of portable near infrared spectrometer after being filtered by Fa-Po cavity,
Spectrogram drafting module is read out the corresponding spectral information of light, integrates and data processing, draws corresponding spectral information
Figure, detect sample a certain position obtain spectral information figure according to the above method after, adjustment portable near infrared spectrometer emit light
The position of line obtains the corresponding multiple spectral information figures of detection sample different location by the above method.
Specifically, after the corresponding multiple spectral information figures of different location for obtaining detection sample, to all spectral informations
Scheme corresponding spectral information and carry out mean value calculation, following two mode can be passed through: (1) at portable near infrared spectrometer end,
The number of the adjustment position of portable near infrared spectrometer is set, for example, 6 times, then, portable near infrared spectrometer can adjust
6 positions, and before each adjustment, the corresponding spectral information figure in the position can be drawn, it is every to have drawn a spectral information
Figure can all be sent to mobile terminal in real time, and portable near infrared spectrometer, which amounts to, draws 6 spectral information figures, and mobile terminal obtains
After getting all spectral information figures, mean value calculation is carried out to the corresponding spectral information of all spectral information figures；(2) portable
Near infrared spectrometer end, portable near infrared spectrometer adjust position always, and before each adjustment, can draw the position
Corresponding spectral information figure, it is every to have drawn a spectral information figure, it can all be sent to mobile terminal in real time, in mobile terminal, if
The quantity for receiving spectral information figure, such as 6 are set, then, mobile terminal is after receiving 6 spectral information figures, to all spectrum
The corresponding spectral information of hum pattern carries out mean value calculation.In addition, also manually controllable mobile terminal is averaged operator
It is worth the operation calculated.
In the present embodiment, after portable near infrared spectrometer collects spectral information, initial spectrum signal is sent to
Amplifier is sent to ADC by amplifier amplification, after ADC analog-to-digital conversion, is sent to ARM chip and is handled, spectral information figure number
According to being temporarily stored in inside the built-in FLASH of ARM, ARM chip passes through the temporary spectral information diagram data of bluetooth module transmission to movement
Terminal.
After step S2. mobile terminal receives the spectral information figure, to the corresponding spectral information of all spectral information figures into
Row mean value calculation obtains spectroscopic data, and the spectroscopic data is sent to background server；
Specifically, can be sent in real time mobile whole after portable near infrared spectrometer obtains a spectral information figure
End, operator by mobile terminal can real time inspection obtain detection sample spectral information figure, detectable light spectrum information figure
The reasonability of corresponding data, can long-pressing transfer end panel after choosing the data if there is the biggish spectroscopic data of deviation
Curtain carries out delete operation, re-measures after deletion to the secondary spectral information figure, after obtaining all spectral information figures, if
In the reasonable scope, it clicks and uploads data button, mobile terminal is to the corresponding spectral information of spectral information figure repeatedly measured
It carries out mean value calculation and generates an average value spectroscopic data, the average value spectroscopic data is sent to backstage by mobile terminal later
Server.Measurement error can be effectively eliminated by repeatedly measuring to be averaged.
Step S3. background server receives the spectroscopic data, and the spectroscopic data is handled and analyzed, and obtains
Analysis result simultaneously sends it to mobile terminal.
Specifically, background server is handled spectroscopic data after the spectroscopic data for receiving mobile terminal transmission
And analysis, wherein handle to spectroscopic data specifically may is that and carry out school to the spectroscopic data by standard normal transformation
Positive processing, after being corrected by standard normal transformation, effectively eliminate size in measurement sample, granular size, surface scattering and
Light path degree changes the influence to measure spectrum.Analyze to spectroscopic data specifically may is that and is created according to kernel partial least squares
Spectral data analysis model is built, i.e., kernel function is introduced into PLS, by recurrence mode by linearly expanding to non-linear.Finally will
The spectroscopic data is input in the spectral data analysis model, obtains spectral data analysis result.This method not only overcomes
Traditional PLS method only handles the limitation of sample data linear relationship, and makes full use of sample space distributed intelligence, establishes
The relationship model of response variable and explanatory variable effectively improves the fitting effect and precision of prediction of model, compares simultaneously
In PLS method, modeling speed is also obviously improved.
Analysis result directly can be sent to mobile terminal after obtaining analysis result by background server, can also will be analyzed
As a result it is compared with calibration value, obtains the test result of detection sample, is i.e. whether detection sample is qualified, then will test conclusion hair
It send to mobile terminal, so that operator carries out qualified sex determination to detection sample.
Based on the above-mentioned technical proposal, the embodiment of the present invention also proposes a kind of spectrum inspection based on portable near infrared spectrometer
Examining system, comprising:
Portable near infrared spectrometer, for obtaining corresponding at least two spectral information of test sample different location respectively
Figure, and the spectral information figure is sent to mobile terminal in real time；
Mobile terminal carries out the corresponding spectral information of all spectral information figures after receiving the spectral information figure
Mean value calculation obtains spectroscopic data, and the spectroscopic data is sent to background server；
Background server is handled and is analyzed for receiving the spectroscopic data, and to the spectroscopic data, divided
Analysis result simultaneously sends it to mobile terminal.
Optionally, the portable near infrared spectrometer includes:
Tungsten halogen lamp, for launching outward light to detecting sample；
Light receiver device, for receiving reflection light of the transmitting light after test sample surface generates diffusing reflection, and
The optical path direction for changing reflection light, makes reflection light be incident to spectrogram drafting module；
Fa-Po cavity, for receive it is described change direction after reflection light, be input to spectrogram after being filtered to it and draw
Molding block；
Spectrogram drafting module is drawn for receiving the filtered reflection light, and according to its corresponding spectral information
Make corresponding spectral information figure.
Optionally, the background server is also used to: being corrected place to the spectroscopic data by standard normal transformation
Reason；And
Spectral data analysis model is created according to kernel partial least squares, the spectroscopic data is input to the spectrum number
According in analysis model, obtaining spectral data analysis result.
It is appreciated that since the spectral detection system of the present invention based on portable near infrared spectrometer is for real
The system of the spectral method of detection based on portable near infrared spectrometer, for disclosed system, due to its with
Disclosed method is corresponding, so description is relatively simple, related place illustrates referring to the part of method.Due to above-mentioned base
It can be improved the real-time of spectral detection in the spectral method of detection of portable near infrared spectrometer, therefore, realize above-mentioned be based on
The system of the spectral method of detection of portable near infrared spectrometer equally can be improved the real-time of spectral detection.
Claims (10)
1. the spectral method of detection based on portable near infrared spectrometer, which comprises the following steps:
Step 1. obtains the corresponding at least two spectrum letter of test sample different location by portable near infrared spectrometer respectively
Breath figure, and the spectral information figure is sent to mobile terminal in real time；
After step 2. mobile terminal receives the spectral information figure, it is averaged to the corresponding spectral information of all spectral information figures
Spectroscopic data is calculated in value, and the spectroscopic data is sent to background server；
Step 3. background server receives the spectroscopic data, and the spectroscopic data is handled and analyzed, and is analyzed
As a result and mobile terminal is sent it to.
2. as described in claim 1 based on the spectral method of detection of portable near infrared spectrometer, which is characterized in that described point
Not Huo Qu the corresponding at least two spectral informations figure of test sample different location include:
Portable near infrared spectrometer launches outward the position of light according to preset times adjustment, and it is different to obtain test sample respectively
The corresponding at least two spectral informations figure in position；
It includes: to receive portable near infrared spectrometer to be adjusted according to preset times that the mobile terminal, which receives the spectral information figure,
Launch outward the corresponding all spectral information figures in position of light.
3. as described in claim 1 based on the spectral method of detection of portable near infrared spectrometer, which is characterized in that described point
Not Huo Qu the corresponding at least two spectral informations figure of test sample different location include:
Portable near infrared spectrometer adjusts the position for launching outward light, and it is corresponding extremely to obtain test sample different location respectively
Few two spectral information figures；
It includes: that mobile terminal receives the corresponding spectral information figure of preset times that the mobile terminal, which receives the spectral information figure,.
4. as described in claim 1 based on the spectral method of detection of portable near infrared spectrometer, which is characterized in that described point
Not Huo Qu the corresponding at least two spectral informations figure of test sample different location include:
The tungsten halogen lamp of portable near infrared spectrometer launches outward light, and light returns after test sample surface generates diffusing reflection
The light receiver device of portable near infrared spectrometer, reflection light changes optical path direction through light receiver device, then passes through method
Amber chamber is incident to the spectrogram drafting module of portable near infrared spectrometer after being filtered, spectrogram drafting module is according to light
Corresponding spectral information draws corresponding spectral information figure, adjusts the position of portable near infrared spectrometer, repeats the above steps
The corresponding at least two spectral informations figure of test sample different location is obtained respectively.
5. as described in claim 1 based on the spectral method of detection of portable near infrared spectrometer, which is characterized in that the shifting
Dynamic terminal is after receiving the spectral information figure further include: carries out real-time display to the spectral information figure.
6. as described in claim 1 based on the spectral method of detection of portable near infrared spectrometer, which is characterized in that described right
It includes: to be corrected processing to the spectroscopic data by standard normal transformation that spectroscopic data, which carries out processing,.
7. as described in claim 1 based on the spectral method of detection of portable near infrared spectrometer, which is characterized in that described right
It includes: to create spectral data analysis model according to kernel partial least squares that spectroscopic data, which carries out analysis, and the spectroscopic data is defeated
Enter into the spectral data analysis model, obtains spectral data analysis result.
8. the spectral detection system based on portable near infrared spectrometer characterized by comprising
Portable near infrared spectrometer, for obtaining the corresponding at least two spectral informations figure of test sample different location respectively,
And the spectral information figure is sent to mobile terminal in real time；
Mobile terminal is averaged to the corresponding spectral information of all spectral information figures after receiving the spectral information figure
Spectroscopic data is calculated in value, and the spectroscopic data is sent to background server；
Background server is handled and is analyzed for receiving the spectroscopic data, and to the spectroscopic data, and analysis knot is obtained
Fruit simultaneously sends it to mobile terminal.
9. as claimed in claim 8 based on the spectral detection system of portable near infrared spectrometer, which is characterized in that it is described just
The formula near infrared spectrometer of taking includes:
Tungsten halogen lamp, for launching outward light to detecting sample；
Light receiver device for receiving reflection light of the transmitting light after test sample surface generates diffusing reflection, and changes
The optical path direction of reflection light makes reflection light be incident to spectrogram drafting module；
Fa-Po cavity, for receive it is described change direction after reflection light, be input to after being filtered to it spectrogram draw mould
Block；
Spectrogram drafting module, for receiving the filtered reflection light, and according to its corresponding spectral information drafting pair
The spectral information figure answered.
10. as claimed in claim 8 based on the spectral detection system of portable near infrared spectrometer, which is characterized in that described
Background server is also used to: being corrected processing to the spectroscopic data by standard normal transformation；And
Spectral data analysis model is created according to kernel partial least squares, the spectroscopic data is input to the spectroscopic data point
It analyses in model, obtains spectral data analysis result.
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| CN111398212A (en) * | 2020-04-08 | 2020-07-10 | 四川虹微技术有限公司 | Method for establishing pepper detection model based on portable near-infrared spectrometer |
| CN112461366A (en) * | 2020-12-16 | 2021-03-09 | 四川长虹电器股份有限公司 | Method for realizing near-infrared spectrometer based on random filter array |
| CN113358594A (en) * | 2020-06-30 | 2021-09-07 | 北京领主科技有限公司 | Substance component analysis system, method, device and medium based on spectrum detection |
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